{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machine or equipment", "material", "process parameter", "concept or principle", "engineering feature", "process characterization"], "input": "The heat exchanger core with a size of 66 mm × 74 mm × 27 mm was fabricated as a single piece through the direct metal laser sintering process ."}
{"machine or equipment": ["heat exchanger", "core"], "material": ["as"], "process parameter": [], "concept or principle": ["fabricated"], "engineering feature": [], "process characterization": []}